Valve.



I. E. SWENDEMAN.

VALVE.

I APPLICATION FILED APR.-6. I911. I 1 171,475 I Patented Feb. 15,1916.

2 SHEETS-SHEET 2.

wit/mes s 66 65M 5. gar.

Tm: COLUMBIA PLANOIIRAPH .Co., WASHINGTON, n. C.

-larly in steam traps whereit was desired to provide a large outlet forthe outflowing .water,.it has been iosnrir E, swnivnniviaiv, orrnovinnivcn, anonn ISLAND.

VALVE;

Application filed. April 6, 1911; Serial No. 6 1 9319 To all whom it mayconcern Be it known that I, JOSEPH E. SwnNDn- MAN,.2L citizen of theUnited States,residing at Providence, in the county of Providence andState ofRhode Island, have invented new and useful ImprovementsinValves, of

which the following is. a specification. j

p This invention relatesto improvements in valves and while to a varietyof uses, it is particularly applicable to steam traps and while theillustrative embodiment herein shown and described is particularlyintended and adapted-for use as a steam trap, I do not limit myself tothe use of the valve for this purpose, neither do I limit myself'totheprecise embodiment of the invention herein shown and described exceptwhere such limitations are expressed in the claims.

Heretofore in the use of valves, particufound necessary to em ploy adouble balanced valve, for the reason that a single valve of large areahaving an atmospheric pressure acting Y anism as to make the use of thesingle valve impracticable.

as used for such conditions are ob ectionable though a single valve,equilibrium, so to speak, thatis, there is'no pressure which must beacted against .order The double balanced valves for the reason that itis difiicult, if not alto gether impossible, seat alike, owing to thefact that dirt is apt to lodge between one valve and its seat: and

thus prevent the other-valve from' seating properly.

The object of my invention is to provide a, single valve which may beused for closing outlets of large area and which requires but littleforce to operate the same or, in other words, the force required ismerely such as is necessary to overcome the friction and weight. of theparts because'the .valve',.al-

is: in a condition of to operate the valve. The valve, as before stated,is, particularly applicable to steam traps whether discharging into theatmosphere or hav ng the outlet connected to a vacuum pump such as isemployed in 7 some steam heating systems.

; The object is further to-pro'v-ide improve 1 means forioperating thevalve. r v a the invention is applicablev i Like numerals referthereagainst' requires the use of such a powerful. mech-j to make thetwo valves screws 16. inlet passage 17 for thesteam aiidthewatercommunicating with I I y y I v 100 pipe'18 discharging into the interiorofthe A still further object is to provide a steam trap which maybeconveniently assembled and then closed by its casing.

Still other objects; and advantages will I appear (hereinafter.

' To these ends, the invention; consists in the novel features ofconstruction'and'in the specificationof Letters Patent; Pat entgd15,1916; 7

combination and arrangement of parts set forth in thefollowing-specification and par- 3- ticularly pointed outin'the'claims;v

Referring to-"thedrawings Figure 1. is a vertical sectional view-of avalve embodying my invent on and particularly intended andadapted to beused-as a steaintrap. Fig. 2

is an elevation of the .valve viewed from the V 1 left hand. side ofFig. l with the hoodof the casingremoved. Fig, 3 is asection taken.

on line 3-3 of -Fig. 1'.

out the severalviews of the drawings.

In the draw1ngs,5 is a tubular valve and v, 6 a'valve seat having anorifice 7 .whichsaid valve is adapted to close; Preferably, the valveandits seat are beveled, as shown in F ig.'1. The valve 5 '-is mountedin any suitable manner to move toward and away from.

the seat 6, preferably being mounted to slide in suitable guidesS andprovided ina vertical support 10. The upperend of the valve 5is.closed'byfa stationary plug 11 mounted in any suitable manner iiithesupport. 10,

and thevalve tion thereto.

7 Preferably, s pp 10 is planes with -a depending boss .12 havingscrewthreaded engagement with a base 13 forming a part 'of a valvecasing, the remainder of said valve casing being formed by a hood 1.4:

provided with aiflange 15 secured to said base in anysuitable manner, asby means of The base 13 is provided with an of condensation and.

this passage. there s; preferably provided. a

valve casing Thebase '13 isalso provided to like parts throughwith anoutlet passage 19 communicating with the Outlet 7 of'thevalve seat 6. 1Prefere ably, said valvelseat has screw-threaded engagement with'the'interior ofthe boss 12 so as to be capable of being adjusted vertically,

[if desired, and theremay be provided a 85 preferably by havingscrew-threaded en- 1 gagement therewith, as shown, ,being arranged toslide vertically with relacheck nut 20 screwed against the under side ofthe boss 12 to prevent the valve seat from turning.

Preferably, the diameter of the outlet 7 5 of the valve seat 6 is. ofthe same or substantially the same diameter as the internal diameter ofthe valve 5 so that inasmuch as the upper end of the valve is closed bythe stationary plug 11, said valve presents no 10 surface whatever to beacted upon by the atmospheric pressure to unseat said valve, as would bethe case if said valve were a solid valve or ifthe upper end of thevalve were not closed by the stationary plug 11, it being evident thatthe under side of said plug is exposed to the atmospheric pressure, butsince said plug is stationary it does not cause thepressure to beexerted upon the valve. Hence it follows that the I diameter of theoutlet 7 and the internal diameter of the valve 5 may be made aslargedesired so as to obtain'a rapid outflow of water and yet withoutrequiring a powerful operating mechanism, as would be the case if thevalve were solid. The force of this'statement will perhaps be moreevident if it be assumed that the outlet 19 is connected to a vacuumpump, as is sometimes the case in steam heating systems. In such case,it will be evident that the suction has no tendencywhatever to seat thevalve because there is no area against which the suction can act. Itwill, therefore, be evident that in spite of the suction existing in theoutlet passage 19 and the steam pressure existing in the interior of thevalve casing, the force required .to unseat and seat the valve is onlysuch as is required to overcome the friction and weight of the parts.

The valve is preferably operated by a mechanism which I will now proceedto describe.

Locatedin the upper portion of the valve casing is a suitable float 21having a de- 4 pending stem 22 pivotally connected to the upper ends oftwo links 23 while the lower ends of said links are pivoted to two arms24:, respectively, said arms being pivoted upon ears 25 provided on thesupport 10. The arms 24 are connected to the valve 5 by two links 26pivoted at their lower ends to' said arms and at their upper ends to acollar 27 secured in any suitable manner to the valve 5, preferably bysplitting said collar and providing a clamp screw 28. The link 23 andarm '24 constitute a toggle on one side of the valve and the other link23 and other arm 24 constitute, a second toggle located on the oppositeside of said valve. Similarly, the link 26 and arm 24 constitute atoggle located on one side of the valve 5 and the other link 26 andother arm 24 constitute a second toggle located on theoppositeside ofsaid valve. Thus it will be seen that the valve 5 is inefi'ect actuatedby ,end of said valve and a four toggles and the toggles on one sideequalize the toggles on the other so that the upward, and downwardmovement of the float 21 isimparted to the valve without any tendency ofthe parts to bind or cramp.

It will now be evident that when the water rises in the casing to suchan extent as to buoy up the float 21, said float will act through themechanism just described to lift the valve 5 away from its seat 6 andthus allow water to flow outwardly from the casing into the outletorifice 7 and thence to the outlet passage 19. As the water lowers inthe casing, the float 21- will, of course, said valve is seated,whereupon the outward flow will cease'and there will be maintainedwithin the casingat all times a large body of water constituting a deepwater seal above the outlet.

Having thus described my invention, what I claim and desire by LettersPatent to secure 1s: I

1.The combination with a valve casing having an inlet and having a valveseat provided with anv outlet orifice, a valve in the form of a tubehaving one end adapted to rest on said seat and in open communicationwith'said outlet orifice at all times during the operation of the valve,an apertured guide forsaid valve, a stationary element closing the otherend of said valve and a float of constant displacement capacity andcontinuously subject to substantially balanced pressure connectedlaterally through said guide to said valve for moving said valve withrelation to said seat and in relation to said stationary element.

2. The combination -with a valve casing having an inlet and having avalve seat provided with an outlet orifice, a valve in the form of atube having one end adapted to rest on said seat-and in opencommunication with said outlet orifice at all times during the operationof the valve, an apertured guide for said valve, a stationary elementcarried by said guide closing the other float of constant displacementcapacity subject to substantially balanced pressure for moving saidvalve with relation to said seat and with relation to said stationaryelement.

3. The combination with a valve casing having aninlet and having a valveseat provided with an outlet orifice, a valve in the form of a tubehaving one end adapted to rest' on said seat and in opencommrmicationrwith said outlet orifice at all times during the operationof the valve, an apertured guide for said valve, a stationary elementcarried by said guide closing the other end of said valve and a float ofconstant dis placement capacity and continuously subject tosubstantially balanced pressure, said float being disposed in alinementwith said gradually close the valve until i hood mounted upon of saidelements.

witnesses.

Witnesses Copies of this patent may be obtained for five cents eacli, byaddre ssing the Washington, D. 0.

float above the valve member, in alinement v therewith and connectedthereto by-a link- 15 age to impart axial movement thereto, and a thebase inclosing all In testlmony whereof I have hereunto set my hand inpresence of tWo subscribing 20 JOSEPH E. SW-ENDEMAN.

LoUIs A. JoNEs SADIE V. MCCARTHY.

Commissioner of 1 Patents,

